Pixel structure and liquid crystal display comprising the pixel structure

ABSTRACT

A pixel structure includes pixel electrodes, data lines, and gate lines. Each of the pixel electrodes has two opposite ends that are each provided with one of the gate lines. The data lines and the gate lines re perpendicular to each other. Each of the pixel electrodes includes at least two sub-pixel domains. The data lines are located beneath the pixel electrode at interfacing between every two adjacent ones of the sub-pixel domains. The pixel electrodes each include slits located in the interfacing of the two adjacent sub-pixel domains. The slits are in alignment with the data line and located above the data line. Also provided is a liquid crystal display. The pixel structure and a liquid crystal display including the pixel structure have a reduced overlapping area between the data line and the pixel electrode above the data line so as to reduce parasitic capacitance and improve V-crosstalk.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims the priority of Chinese Patent Application No.201410738882.3, entitled “Pixel Structure and Liquid Crystal DisplayComprising the Pixel Structure”, filed on Dec. 16, 2014, the disclosureof which is incorporated herein by reference in its entirety.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to the field of liquid crystal displaying,and in particular to a pixel structure and a liquid crystal displaycomprising the pixel structure.

2. The Related Arts

With the increasing progress of the liquid crystal display technology,liquid crystal displaying devices, such as light emitting diode panels,which serve as a display component, has been widely used in electronicproducts, such as mobile phones, digital cameras, and personal digitalassistants (PDAs). The liquid crystal display panel comprises a pixelstructure. Referring to FIG. 1, a schematic view is given to illustratea conventional pixel structure. The pixel structure 100 is applicable toa liquid crystal displaying device, such as a liquid crystal display.The conventional pixel structure 100 generally comprises a plurality ofpixel electrode 10, data lines 20, gate lines 30, and an uppersubstrate. The data lines 20 are arranged between adjacent pixelelectrodes 10 and are perpendicular to the gate lines 30. The uppersubstrate is provided at locations corresponding to metal wiring, suchas the data lines 20 and the gate lines 30, with a black matrix (BM).The black matrix shields light leakage between the data lines 20 andshielding metal. As shown in FIG. 1, each pixel electrode 10 isgenerally divided by separation electrodes 40 into four domains 50.

In displaying a black-background white-frame image with the pixelstructure 100, due to factors, such as panel warpage and positionalshift of upper and lower substrates, light leakage may occur around thedata line 20 so as to cause V-Crosstalk. Further, since relativepositional shift occurs between the upper and lower substrates, an areawith a large positional shift would result in a large area of darknessso that the black matrix on the substrate must be expanded in order toshield light leakage. This reduces the aperture ratio of the pixel. Toincrease the aperture ratio of the pixel, it is common to arranged thedata line 20 beneath the separation electrode 40 at the interfacing ofthe domains 50. However, since in such an arrangement, the data line 20is completely coincident with the separation electrode 40 of the pixelelectrode 100, a relatively high parasitic capacitance would be causedbetween them. This leads to V-crosstalk in a grey-background white frameimage.

SUMMARY OF THE INVENTION

The present invention provides a pixel structure and a liquid crystaldisplay comprising the pixel structure, which help reduce an overlappingarea between a data line and a pixel electrode located above the dataline, reducing the parasitic capacitance between the data line and thepixel electrode and also reducing loading of the data line, increasingcharging rate of the pixel, and alleviating V-crosstalk of agrey-background white-frame image.

In one aspect, the present invention provides a pixel structure, whichcomprises a plurality of pixel electrodes, a plurality of data lines,and a plurality of gate lines, each of the pixel electrodes having twoopposite ends that are each provided with one of the gate lines, thedata lines and the gate lines being perpendicular to each other, whereineach of the pixel electrodes comprises at least two sub-pixel domains,the data lines being located beneath the pixel electrode at interfacingbetween every two adjacent ones of the sub-pixel domains, the pixelelectrodes each comprising a plurality of slits located in theinterfacing of the two adjacent ones of the sub-pixel domains, theplurality of slits being in alignment with the data line and locatedabove the data line.

In the above pixel structure, the pixel electrodes each comprise a firstsub-pixel domain and a second sub-pixel domain, the first sub-pixeldomain and the second sub-pixel domain being symmetric with respect tothe data line, the first sub-pixel domain and the second sub-pixeldomain being each formed with a plurality of slits, the plurality ofslits dividing each of the sub-pixel domains into a plurality ofseparated tabs, the plurality of slits and the plurality of separatedtabs being arranged and distributed alternately.

In the above pixel structure, the slits of the first sub-pixel domainand the corresponding slits of the second sub-pixel domain are jointedto and in communication with each other at locations above the data lineand are symmetric with respect to the data line, the separated tabs ofthe first sub-pixel domain being connected to the correspondingseparated tabs of the second sub-pixel domain at locations above thedata line and being symmetric with respect to the data line, interfacingbetween the first sub-pixel domain and the second sub-pixel domain thatis above the data line being formed of alternately arranged slits thathave a predetermined width and are equally spaced.

In the above pixel structure, the plurality of slits has identical openwidth and the plurality of separated tabs has identical width, theplurality of slits and the plurality of separated tabs being arrangedand distributed alternately and in an equally spaced manner.

In the above pixel structure, the separated tabs of the first sub-pixeldomain are disconnected from the corresponding separated tabs of thesecond sub-pixel domain at locations above the data line, the pixelelectrode that is located above the data line comprising strip-likeopenings formed therein and extending in a lengthwise direction of thedata line so as to reduce overlapping area between the data line and thepixel electrode located above the data line.

In the above pixel structure, the pixel structure further comprises aplurality of pixel common electrodes, the pixel electrode having anothertwo opposite ends each provided with one of the pixel common electrodes,each of the pixel common electrodes having two opposite ends that arespaced from the gate lines by a predetermined distance, imaginaryextension lines of the pixel common electrodes being perpendicular tothe gate lines.

In the above pixel structure, the gate line is on the same metal layeras a material that makes the pixel common electrodes, the pixel commonelectrodes located at the two opposite ends of the pixel electrode beingboth parallel to the data line and symmetric with respect to an axis ofthe data line, the pixel common electrodes being located beneath thepixel electrode.

In the above pixel structure, the pixel structure further comprises aplurality of pixel common electrodes, the pixel electrode having anothertwo opposite ends each provided with one of the pixel common electrodes,each of the pixel common electrodes having two opposite ends that arespaced from the gate lines by a predetermined distance, imaginaryextension lines of the pixel common electrodes being perpendicular tothe gate lines.

In the above pixel structure, a material that makes the pixel commonelectrodes is not on the same metal layer as the gate line, the pixelcommon electrodes extending across the gate lines and partly overlappingthe pixel electrode, the pixel common electrodes located at the twoopposite ends of the pixel electrode being both parallel to the dataline and symmetric with respect to an axis of the data line, the pixelcommon electrodes being located beneath the pixel electrode.

In the above pixel structure, when the interfacing between the firstsub-pixel domain and the second sub-pixel domain above the data linecomprises the slits or is formed with the openings extending in thelengthwise direction of the data line, the pixel structure is not colorfilter on array and color resists are formed on a color filter side ofan upper substrate; or

the pixel structure is not color filter on array and color resists areformed on a thin-film transistor side of a lower substrate.

In another aspect, the present invention provides a liquid crystaldisplay, which comprises: a gate driving circuit, which generates a gatesignal; a data driving circuit, which generates a grey level signal; anda pixel structure, which comprises a plurality of pixel electrodes, aplurality of data lines, and a plurality of gate lines, the gate linesbeing electrically connected to the gate driving circuit to transmit thegate signal, the data lines being electrically connected to the datadriving circuit to transmit the grey level signal, the pixel electrodebeing operable to drive a pixel in response to the grey level signal;wherein each of the pixel electrodes has two opposite ends that are eachprovided with one of the gate lines, the data lines and the gate linesbeing perpendicular to each other, each of the pixel electrodescomprising at least two sub-pixel domains, the data lines being locatedbeneath the pixel electrode at interfacing between every two adjacentones of the sub-pixel domains, the pixel electrodes each comprising aplurality of slits located in the interfacing of the two adjacent onesof the sub-pixel domains, the plurality of slits being in alignment withthe data line and located above the data line.

In the above liquid crystal display, the pixel electrodes each comprisea first sub-pixel domain and a second sub-pixel domain, the firstsub-pixel domain and the second sub-pixel domain being symmetric withrespect to the data line, the first sub-pixel domain and the secondsub-pixel domain being each formed with a plurality of slits, theplurality of slits dividing each of the sub-pixel domains into aplurality of separated tabs, the plurality of slits and the plurality ofseparated tabs being arranged and distributed alternately.

In the above liquid crystal display, the slits of the first sub-pixeldomain and the corresponding slits of the second sub-pixel domain arejointed to and in communication with each other at locations above thedata line and are symmetric with respect to the data line, the separatedtabs of the first sub-pixel domain being connected to the correspondingseparated tabs of the second sub-pixel domain at locations above thedata line and being symmetric with respect to the data line, interfacingbetween the first sub-pixel domain and the second sub-pixel domain thatis above the data line being formed of alternately arranged slits thathave a predetermined width and are equally spaced.

In the above liquid crystal display, the plurality of slits hasidentical open width and the plurality of separated tabs has identicalwidth, the plurality of slits and the plurality of separated tabs beingarranged and distributed alternately and in an equally spaced manner.

In the above liquid crystal display, the separated tabs of the firstsub-pixel domain are disconnected from the corresponding separated tabsof the second sub-pixel domain at locations above the data line, thepixel electrode that is located above the data line comprisingstrip-like openings formed therein and extending in a lengthwisedirection of the data line so as to reduce overlapping area between thedata line and the pixel electrode located above the data line.

In the above liquid crystal display, the pixel structure furthercomprises a plurality of pixel common electrodes, the pixel electrodehaving another two opposite ends each provided with one of the pixelcommon electrodes, each of the pixel common electrodes having twoopposite ends that are spaced from the gate lines by a predetermineddistance, imaginary extension lines of the pixel common electrodes beingperpendicular to the gate lines.

In the above liquid crystal display, the gate line is on the same metallayer as a material that makes the pixel common electrodes, the pixelcommon electrodes located at the two opposite ends of the pixelelectrode being both parallel to the data line and symmetric withrespect to an axis of the data line, the pixel common electrodes beinglocated beneath the pixel electrode.

In the above liquid crystal display, the pixel structure furthercomprises a plurality of pixel common electrodes, the pixel electrodehaving another two opposite ends each provided with one of the pixelcommon electrodes, each of the pixel common electrodes having twoopposite ends that are spaced from the gate lines by a predetermineddistance, imaginary extension lines of the pixel common electrodes beingperpendicular to the gate lines.

In the above liquid crystal display, a material that makes the pixelcommon electrodes is not on the same metal layer as the gate line, thepixel common electrodes extending across the gate lines and partlyoverlapping the pixel electrode, the pixel common electrodes located atthe two opposite ends of the pixel electrode being both parallel to thedata line and symmetric with respect to an axis of the data line, thepixel common electrodes being located beneath the pixel electrode.

In the above liquid crystal display, when the interfacing between thefirst sub-pixel domain and the second sub-pixel domain above the dataline comprises the slits or is formed with the openings extending in thelengthwise direction of the data line, the pixel structure is not colorfilter on array and color resists are formed on a color filter side ofan upper substrate; or

the pixel structure is not color filter on array and color resists areformed on a thin-film transistor side of a lower substrate.

Compared to the prior art, the embodiments of the present inventionprovide a pixel structure, in which the interfacing between a firstsub-pixel domain and a second sub-pixel domain that is located above adata line are formed of alternately arranged slits of predeterminedwidths or the pixel electrode located above the data line comprises astrip-like opening formed therein to extend in the lengthwise directionof the data line. Thus, the overlapping area between the data line andthe pixel electrode located above the data line is reduced. This reducesparasitic capacitance between the data line and the pixel electrode andalso alleviates V-crosstalk of a grey-background white-frame image.

BRIEF DESCRIPTION OF THE DRAWINGS

To more clearly explain the technical solutions proposed in embodimentsof the present invention or those of the prior art, a brief descriptionof the drawings that are necessary for describing the embodiments of thepresent invention or those of the prior art is given as follows. It isobvious that the drawings that will be described below show only someembodiments of the present invention. For those having ordinary skillsof the art, other drawings may also be readily available from theseattached drawings without the expense of creative effort and endeavor.

FIG. 1 is a schematic view showing a conventional pixel structure;

FIG. 2 is a schematic view showing an illustrative example of a pixelstructure according to a first embodiment of the present invention;

FIG. 3 is a schematic view showing another illustrative example of thepixel structure according to the first embodiment of the presentinvention;

FIG. 4 is a schematic view showing an illustrative example of a pixelstructure according to a second embodiment of the present invention;

FIG. 5 is a schematic view showing another illustrative example of thepixel structure according to the second embodiment of the presentinvention;

FIG. 6 is a schematic view showing an illustrative example of a pixelstructure according to a third embodiment of the present invention;

FIG. 7 is a schematic view showing another illustrative example of thepixel structure according to the third embodiment of the presentinvention;

FIG. 8 is a schematic view showing an illustrative example of a pixelstructure according to a fourth embodiment of the present invention; and

FIG. 9 is a schematic view showing another illustrative example of thepixel structure according to the fourth embodiment of the presentinvention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

A clear and complete description will be given to technical solutions ofthe embodiments of the present invention with reference to the attacheddrawings of the embodiments of the present invention. However, theembodiments so described are only some, but not all, of the embodimentsof the present invention. Other embodiments that are available to thosehaving ordinary skills of the art without the expense of creative effortand endeavor are considered belonging to the scope of protection of thepresent invention.

Further, the description given below for the various embodiment is madewith reference to the attached drawings to illustrate, inexemplificative form, specific embodiments of the present invention.Direction related terminology mentioned in the present invention, suchas “up”, “down”, “front”, “rear”, “left”, “right”, “internal”,“external” and “sideward”, are directions identified in the sheets ofdrawings. Thus, the use of the direction related terminology is for thepurposes of explanation and understanding of the present invention in abetter and clear way only and is not intended to limit the scope of thepresent invention. Further, throughout the various sheets of drawings,elements that have similar structures or are identical are designatedwith the same reference characters.

Referring to FIG. 2, FIG. 2 is a schematic view showing an illustrativeexample of a pixel structure according to a first embodiment of thepresent invention. As shown in FIG. 2, the pixel structure 200 comprisesa plurality of pixel electrodes 210, a plurality of data lines 220, aplurality of gate lines 230, and a plurality of pixel common electrodes240. Each of the data lines 220 is located beneath a corresponding oneof the pixel electrodes 210 and is perpendicular to the gate lines 230.The pixel common electrodes 240 are arranged on two opposite sides ofeach of the pixel electrode 210 and are parallel to the data line 220.In this arrangement, the material that makes the pixel common electrodes240 is on the same metal layer as the gate lines 230.

For easy explanation and illustration, as shown in FIG. 2, in anillustrative example of the instant embodiment, description will begiven to an example of which the number of the pixel electrode 210involved is one for illustration.

In the embodiment of the present invention, each of the pixel electrodes210, as a whole, is in the form of a rectangular plate that is locatedbetween two pixel common electrodes 240. The pixel electrode 210 isdivided into two, upper and lower, pixel domains by a pixel electrodetrunk 250. Preferably, each pixel electrode 210 is divided by the pixelelectrode trunk 250 into two pixel domains that are symmetric in avertical direction. In other others, the two pixel domains are symmetricin the vertical direction with respect to the pixel electrode trunk 250.

The data line 220 is arranged beneath the pixel electrode 210 and isperpendicular to the pixel electrode trunk 250. The data line 220functions to transmit a grey level signal and the pixel electrode 210drives the pixel in response to the grey level signal. The pixelelectrode 210 is divided by the data line 220 into two, left and right,pixel domains, and preferably, each pixel electrode 210 is divided bythe data line 220 into two pixel domains that are symmetric in ahorizontal direction. In other words, the two pixel domains aresymmetric with respect to the data line 220. In the embodiment of thepresent invention, since the data line 220 and the pixel electrode trunk250 are perpendicular to each other, each pixel electrode 210 is dividedby the data line 220 and the pixel electrode trunk 250 into foursub-pixel domains (as indicated by phantom lines of FIG. 1), which arerespectively referred to as a first sub-pixel domain 211, a secondsub-pixel domain 212, a third sub-pixel domain 213, and a fourthsub-pixel domain 214.

In the embodiment of the present invention, the first sub-pixel domain211 and the second sub-pixel domain 212 are symmetric with respect tothe data line 220; and the third sub-pixel domain 213 and the fourthsub-pixel domain 214 are symmetric with respect to the data line 220.The first sub-pixel domain 211 and the third sub-pixel domain 213 aresymmetric with respect to the pixel electrode trunk 250; and the secondsub-pixel domain 212 and the fourth sub-pixel domain 214 are symmetricwith respect to the pixel electrode trunk 250.

The first sub-pixel domain 211, the second sub-pixel domain 212, thethird sub-pixel domain 213, and the fourth sub-pixel domain 214 areeach, as a whole, in the form of a rectangular plate but not limitedthereto. In the embodiment of the present invention, the first sub-pixeldomain 211, the second sub-pixel domain 212, the third sub-pixel domain213, and the fourth sub-pixel domain 214 are each provided with aplurality of slits 215. The plurality of slits 215 separate each of thesub-pixel domains into a plurality of strip-like separated tabs 216 insuch a way that the plurality of slits 215 and the plurality ofseparated tabs 216 are arranged and distributed alternately. Preferably,the plurality of slits 215 has open widths that are identical, meaningthe distance between any two adjacent ones of the separated tabs 216 isidentical; and the plurality of separated tabs 216 has widths that areidentical, meaning the distance between any two adjacent ones of theslits 215 is identical.

Preferably, in the embodiment of the present invention, the slits 215 ofthe first sub-pixel domain 211 and the corresponding slits 215 of thesecond sub-pixel domain 212 are jointed to and in communication witheach other at locations above the data line 220 and are symmetric withrespect to the data line 220; the separated tabs 216 of the firstsub-pixel domain 211 and the corresponding separated tabs 216 of thesecond sub-pixel domain 212 are connected to each other at locationsabove the data line 220 and are symmetric with respect to the data line220. The slits 215 of the third sub-pixel domain 213 and thecorresponding slits 215 of the fourth sub-pixel domain 214 are jointedto and in communication with each other at locations above the data line220 and are symmetric with respect to the data line 220; the separatedtabs 216 of the third sub-pixel domain 213 are connected to thecorresponding separated tabs 216 of the fourth sub-pixel domain 214 atlocations above the data line 220 and are symmetric with respect to thedata line 220. The first sub-pixel domain 211 and the third sub-pixeldomain 213 are symmetric with respect to the pixel electrode trunk 250so that the slits 215 and the separated tabs 216 of the first sub-pixeldomain 211 and the slits 215 and the separated tabs 216 of the thirdsub-pixel domain 213 respectively corresponding thereto are symmetricwith respect to the pixel electrode trunk 250; the second sub-pixeldomain 212 and the fourth sub-pixel domain 214 are symmetric withrespect to the pixel electrode trunk 250 so that the slits 215 and theseparated tabs 216 of the second sub-pixel domain 212 and the slits 215and the separated tabs 216 of the fourth sub-pixel domain 214respectively corresponding thereto are symmetric with respect to thepixel electrode trunk 250.

In the embodiment of the present invention, since the slits 215 of thefirst sub-pixel domain 211 and the corresponding slits 215 of the secondsub-pixel domain 212 are jointed to and in communication with each otherat locations above the data line 220 and the slits 215 of the thirdsub-pixel domain 213 and the corresponding slits 215 of the fourthsub-pixel domain 214 are jointed to and in communication with each otherat locations above the data line 220, the interfacing between the firstsub-pixel domain 211 and the second sub-pixel domain 212 and theinterfacing between the third sub-pixel domain 213 and the fourthsub-pixel domain 214 that are located above the data line 220 both iscomposed of alternately arranged slits having a predetermined width.Thus, the overlapping area between the data line 220 and the pixelelectrode 210 located above the data line 220 is reduced. This reducesparasitic capacitance between the data line 220 and the pixel electrode210 and also alleviates V-crosstalk of a grey-background white-frameimage.

The gate lines 230 function to transmit a gate signal. In the embodimentof the present invention, the gate lines 230 are arranged at twoopposite ends of the pixel electrode 210 (namely parallel to a shortside direction of the pixel electrode 210) and are spaced from the pixelelectrode 210 by a predetermined distance. The gate line 230 at the twoopposite ends of the pixel electrode 210 are parallel to each other andare perpendicular to the data line 220 and the pixel common electrode240. The gate lines 230 are on the same metal layer as the material thatmakes the pixel common electrode 240.

The pixel common electrodes 240 supply a common electrode voltage to thepixel. In the embodiment of the present invention, the pixel commonelectrodes 240 are arranged at the other two opposite ends of the pixelelectrode 210 (namely parallel to a long side direction of the pixelelectrode 210) and partly and respectively overlap edge portions of thetwo opposite ends of the pixel electrode 210. The pixel commonelectrodes 240 on the two opposite ends of the pixel electrode 210 areparallel to each other and are located beneath the pixel electrode 210.In the embodiment of the present invention, each of the pixel commonelectrodes 240 has two opposite ends that are respectively spaced fromthe gate lines 230 by a predetermined distance. An imaginary extensionline of each pixel common electrode 240 is perpendicular to the gatelines 230. Preferably, the two pixel common electrodes 240 are parallelwith the data line 220 and are symmetric with respect to an axis of thedata line 220.

It is appreciated that the number of the pixel electrode 210 can be two.Referring to FIG. 3, FIG. 3 is a schematic view showing anotherillustrative example of the pixel structure according to the firstembodiment of the present invention. In the instant embodiment,description will be given to an example in which the number of the pixelelectrode 210 involved is two for illustration.

In the embodiment, two pixel electrodes 210 are arranged side by side onthe same plane and are spaced from each other by a predetermineddistance. The data line 220 is located beneath the pixel electrodes 210and the gate line 230 is located between the two pixel electrodes 210and is spaced from the two pixel electrodes 210 by a predetermineddistance and is perpendicular to the data line 220. Each of the pixelelectrodes 210 is divided by the data line 220 and a pixel electrodetrunk 250 into four sub-pixel domains, which are respectively a firstsub-pixel domain 211, a second sub-pixel domain 212, a third sub-pixeldomain 213, and a fourth sub-pixel domain 214.

In the instant embodiment, each of the pixel electrodes 210 has twoopposite ends (namely parallel to the long side direction of the pixelelectrode 210) that are provided with pixel common electrodes 240 andthe pixel common electrodes 240 are located beneath the pixel electrode210 and are respectively and partly overlap the edge portions of the twoopposite ends of the pixel electrode 210. The pixel common electrode 240on the two opposite ends of the pixel electrode 210 are parallel to eachother and the ends of the pixel common electrodes 240 are spaced fromthe gate line 230 so that a predetermined distance is presenttherebetween. Imaginary extension lines of the pixel common electrodes240 are perpendicular to the gate line 230. Preferably, the two pixelcommon electrodes 240 are parallel with the data line 220 and aresymmetric with respect to an axis of the data line 220. The gate line230 is on the same metal layer as the material that makes the pixelcommon electrodes 240.

Referring to FIG. 4, FIG. 4 is a schematic view showing an illustrativeexample of a pixel structure according to a second embodiment of thepresent invention. As shown in FIG. 4, for easy explanation andillustration, in the instant embodiment, description will be given to anexample of which the number of the pixel electrode involved is one forillustration. In the embodiment of the present invention, the structureof the pixel structure 300 of the instant embodiment is the same as thestructure of the pixel structure 200 shown in FIG. 2, where the pixelstructure 300 comprises a pixel electrode 210, a data line 220, two gatelines 230, and two pixel common electrodes 240; the data line 220 islocated beneath the pixel electrode 210 and is perpendicular to the gatelines 230; the pixel common electrodes 240 are located at two oppositesides of the pixel electrode 210 and are parallel to the data line 220;and the pixel common electrodes 240 are located beneath the pixelelectrode 210 and are respectively and partly overlap edge portions ofthe two opposite ends of the pixel electrode 210.

A difference between the pixel structure 300 of the instant embodimentand the pixel structure 200 shown in FIG. 2 is that the material thatmakes the pixel common electrodes 240 is not on the same metal layer asthe gate lines 230 and under this condition, the pixel common electrodes240 extend across the gate lines 230 and partly overlap the pixelelectrode 210.

It is appreciated that the number of the pixel electrode 210 can be two.Referring to FIG. 5, FIG. 5 is a schematic view showing anotherillustrative example of the pixel structure according to the secondembodiment of the present invention. In the instant embodiment,description will be given to an example in which the number of the pixelelectrode 210 involved is two for illustration.

In the embodiment, two pixel electrodes 210 are arranged side by side onthe same plane and are spaced from each other by a predetermineddistance. The data line 220 is located beneath the pixel electrodes 210and the gate line 230 is located between the two pixel electrodes 210and is spaced from the two pixel electrodes 210 by a predetermineddistance and is perpendicular to the data line 220. The material thatmakes the pixel common electrodes 240 is not on the same metal layer asthe gate line 230 and under this condition, the pixel common electrodes240 extend across the gate lines 230 and partly overlap the pixelelectrodes 210.

Referring to FIG. 6, FIG. 6 is a schematic view showing an illustrativeexample of a pixel structure according to a third embodiment of thepresent invention. As shown in FIG. 6, for easy explanation andillustration, in the instant embodiment, description will be given to anexample of which the number of the pixel electrode involved is one forillustration. In the embodiment of the present invention, the structureof the pixel structure 400 of the instant embodiment is essentially thesame as the structure of the pixel structure 200 shown in FIG. 2, wherethe pixel structure 400 comprises a pixel electrode 210, a data line220, two gate lines 230, and two pixel common electrodes 240; the dataline 220 is located beneath the pixel electrode 210 and is perpendicularto the gate lines 230; the pixel common electrodes 240 are located attwo opposite sides of the pixel electrode 210 and are parallel to thedata line 220; and the pixel common electrodes 240 are located beneaththe pixel electrode 210 and are respectively and partly overlap edgeportions of the two opposite ends of the pixel electrode 210.

A difference between the pixel structure 400 of the instant embodimentand the pixel structure 200 shown in FIG. 2 is that the separated tabs216 of the first sub-pixel domain 211 and the corresponding separatedtabs 216 of the second sub-pixel domain 212 are not connected to eachother at locations above the data line 220 and the separated tabs 216 ofthe third sub-pixel domain 213 and the corresponding separated tabs 216and the fourth sub-pixel domain 214 are not connected to each other atlocations above the data line 220. In other words, since the separatedtabs 216 of the first sub-pixel domain 211 and the correspondingseparated tabs 216 of the second sub-pixel domain 212 are disconnectedfrom each other at locations above the data line 220 and the separatedtabs 216 of the third sub-pixel domain 213 and the correspondingseparated tabs 216 of the fourth sub-pixel domain 214 are disconnectedfrom each other at locations above the data line 220, the pixelelectrode 210 comprises two, upper and lower, openings 218 extending ina lengthwise direction of the data line 220 and located above the dataline 220 and the two upper and lower the openings 218 are separated fromeach other by the pixel electrode trunk 250. Thus, since the pixelelectrode 210 comprises the openings 218 formed at locationscorresponding to the data line 220, the overlapping area between thedata line 220 and the pixel electrode 210 located above the data line220 is reduced. This reduces parasitic capacitance between the data line220 and the pixel electrode 210 and also alleviates V-crosstalk of agrey-background white-frame image.

It is appreciated that the number of the pixel electrode 210 can be two.Referring to FIG. 7, FIG. 7 is a schematic view showing anotherillustrative example of the pixel structure according to the thirdembodiment of the present invention. In the instant embodiment,description will be given to an example in which the number of the pixelelectrode 210 involved is two for illustration.

In the embodiment, two pixel electrodes 210 are arranged side by side onthe same plane and are spaced from each other by a predetermineddistance. The data line 220 is located beneath the pixel electrodes 210and the gate line 230 is located between the two pixel electrodes 210and is spaced from the two pixel electrodes 210 by a predetermineddistance and is perpendicular to the data line 220. Each of the pixelelectrodes 210 has two opposite ends (namely parallel to the long sidedirection of the pixel electrode 210) that are provided with pixelcommon electrodes 240 and the pixel common electrodes 240 are locatedbeneath the pixel electrode 210 and are respectively and partly overlapthe edge portions of the two opposite ends of the pixel electrode 210.The pixel common electrode 240 on the two opposite ends of the pixelelectrode 210 are parallel to each other and the ends of the pixelcommon electrodes 240 are spaced from the gate line 230 so that apredetermined distance is present therebetween. Imaginary extensionlines of the pixel common electrodes 240 are perpendicular to the gateline 230. The two pixel common electrodes 240 are parallel with the dataline 220 and are symmetric with respect to an axis of the data line 220.The gate line 230 is on the same metal layer as the material that makesthe pixel common electrodes 240.

Referring to FIG. 8, FIG. 8 is a schematic view showing an illustrativeexample of a pixel structure according to a fourth embodiment of thepresent invention. As shown in FIG. 8, for easy explanation andillustration, in the instant embodiment, description will be given to anexample of which the number of the pixel electrode involved is one forillustration. In the embodiment of the present invention, the structureof the pixel structure 500 of the instant embodiment is the same as thestructure of the pixel structure 400 shown in FIG. 6, where the pixelstructure 500 comprises a pixel electrode 210, a data line 220, two gatelines 230, and two pixel common electrodes 240; the data line 220 islocated beneath the pixel electrode 210 and is perpendicular to the gatelines 230; the pixel common electrodes 240 are located at two oppositesides of the pixel electrode 210 and are parallel to the data line 220;and the pixel common electrodes 240 are located beneath the pixelelectrode 210 and are respectively and partly overlap edge portions ofthe two opposite ends of the pixel electrode 210.

A difference between the pixel structure 500 of the instant embodimentand the pixel structure 400 shown in FIG. 6 is that the material thatmakes the pixel common electrodes 240 is not on the same metal layer asthe gate lines 230 and under this condition, the pixel common electrodes240 extend across the gate lines 230 and partly overlap the pixelelectrode 210.

It is appreciated that the number of the pixel electrode 210 can be two.Referring to FIG. 9, FIG. 9 is a schematic view showing anotherillustrative example of the pixel structure according to the fourthembodiment of the present invention. In the instant embodiment,description will be given to an example in which the number of the pixelelectrode 210 involved is two for illustration.

In the embodiment, two pixel electrodes 210 are arranged side by side onthe same plane and are spaced from each other by a predetermineddistance. The data line 220 is located beneath the pixel electrodes 210and the gate line 230 is located between the two pixel electrodes 210and is spaced from the two pixel electrodes 210 by a predetermineddistance and is perpendicular to the data line 220. The material thatmakes the pixel common electrodes 240 is not on the same metal layer asthe gate line 230 and under this condition, the pixel common electrodes240 extend across the gate lines 230 and partly overlap the pixelelectrodes 210.

Further, when the interfacing between the first sub-pixel domain 211 andthe second sub-pixel domain 212 and the interfacing between the thirdsub-pixel domain 213 and the fourth sub-pixel domain 214 that are abovethe data line 220 are formed to be alternately arranged slits ofpredetermined widths or openings 218 formed along the length of the dataline, the pixel structure can be of non-CFA (color filter on array) andcolor resists are formed on a color filter side of an upper substrate oralternatively, the pixel structure can be CFA and color resists areformed on the thin-film transistor (TFT) side of a lower substrate.

It is appreciated that in the embodiments of the present invention, thenumber of sub-pixel domains included in each pixel electrode comprisesis not limited to four and may alternatively be 2, 6, or 8, or othernumbers and the structure of each of the sub-pixel domains is similar tothat of the sub-pixel domains described above with reference to thesecond to fourth embodiments.

In summary, the embodiments of the present invention provide a pixelstructure, in which the interfacing between a first sub-pixel domain 211and a second sub-pixel domain 212 and the interfacing between a thirdsub-pixel domain 213 and a fourth sub-pixel domain 214 that are locatedabove a data line 220 are formed of alternately arranged slits ofpredetermined widths or the pixel electrode 210 located above the dataline 220 comprises two strip-like openings 218 formed in upper and lowerportions thereof to extend in the lengthwise direction of the data line.Thus, the overlapping area between the data line 220 and the pixelelectrode 210 located above the data line 220 is reduced. This reducesparasitic capacitance between the data line 220 and the pixel electrode210 and also alleviates V-crosstalk of a grey-background white-frameimage.

Another embodiment of the present invention provides a liquid crystaldisplay. The liquid crystal display comprises a gate driving circuit(not shown), a data driving circuit (not shown), and the pixel structuredescribed in the above embodiments. The pixel structure comprises aplurality of pixel electrodes 210, a plurality of data lines 220, aplurality of gate lines 230, and a plurality of pixel common electrodes240. The data line 220 is located beneath the corresponding pixelelectrode 210 and is perpendicular to the gate line 230. Each of thepixel electrodes 210 has two opposite sides each provided with a pixelcommon electrode 240. The pixel common electrode 240 is parallel to thedata line 220. The material that makes the pixel common electrode 240 ison the same metal layer as the gate line 230, or they are on differentmetal layers.

The gate driving circuit generates a gate signal. The gate line 230 iselectrically connected to the gate driving circuit for transmitting thegate signal. The data driving circuit generates a grey level signal. Thedata line 220 is electrically connected to data driving circuit fortransmitting the grey level signal. The pixel electrode 210 drives thepixel in response to the grey level signal.

It is appreciated that the liquid crystal display and the pixelstructure are applicable to any product or component having a displayingfunction, such as an electronic paper, a liquid crystal television, amobile phone, a digital picture frame, and a tablet computer.

The present invention provides a liquid crystal display, in which sincethe interfacing between a first sub-pixel domain 211 a the secondsub-pixel domain 212 and the interfacing between a third sub-pixeldomain 213 and a fourth sub-pixel domain 214 that are located above adata line 220 are formed as alternatively arranged slits having apredetermined width or the pixel electrode 210 located above the dataline 220 comprises two strip-like openings 218 extending in thelengthwise direction of the data line 220 to be located at upper andlower sides. Thus, the overlapping area between the data line 220 andthe pixel electrode 210 located above the data line 220 is reduced. Thisreduces parasitic capacitance between the data line 220 and the pixelelectrode 210 and also alleviates V-crosstalk of a grey-backgroundwhite-frame image. Further, when the liquid crystal display paneldisplays normally, disclination line caused by poor direction guidanceof liquid crystal molecules in the interfacing between the sub-pixeldomains and the edge portions of the pixel electrode can be shielded bythe data line to become invisible.

The above illustrates only a preferred embodiment according to thepresent invention and is not intended to limit the scope of right of thepresent invention. Those having ordinary skills of the art wouldappreciate that various equivalent modifications that achieve all orsome of the operations of the above-described embodiment and fall withinscope of the attached claims are considered within the scope covered bythe present invention.

What is claimed is:
 1. A pixel structure, comprising a plurality ofpixel electrodes, a plurality of data lines, and a plurality of gatelines, each of the pixel electrodes having two opposite ends that areeach provided with one of the gate lines, the data lines and the gatelines being perpendicular to each other, wherein each of the pixelelectrodes comprises at least two sub-pixel domains, the data linesbeing located beneath the pixel electrode at interfacing between everytwo adjacent ones of the sub-pixel domains, the pixel electrodes eachcomprising a plurality of slits located in the interfacing of the twoadjacent ones of the sub-pixel domains, the plurality of slits being inalignment with the data line and located above the data line.
 2. Thepixel structure as claimed in claim 1, wherein the pixel electrodes eachcomprise a first sub-pixel domain and a second sub-pixel domain, thefirst sub-pixel domain and the second sub-pixel domain being symmetricwith respect to the data line, the first sub-pixel domain and the secondsub-pixel domain being each formed with a plurality of slits, theplurality of slits dividing each of the sub-pixel domains into aplurality of separated tabs, the plurality of slits and the plurality ofseparated tabs being arranged and distributed alternately.
 3. The pixelstructure as claimed in claim 2, wherein the slits of the firstsub-pixel domain and the corresponding slits of the second sub-pixeldomain are jointed to and in communication with each other at locationsabove the data line and are symmetric with respect to the data line, theseparated tabs of the first sub-pixel domain being connected to thecorresponding separated tabs of the second sub-pixel domain at locationsabove the data line and being symmetric with respect to the data line,interfacing between the first sub-pixel domain and the second sub-pixeldomain that is above the data line being formed of alternately arrangedslits that have a predetermined width and are equally spaced.
 4. Thepixel structure as claimed in claim 2, wherein the plurality of slitshas identical open width and the plurality of separated tabs hasidentical width, the plurality of slits and the plurality of separatedtabs being arranged and distributed alternately and in an equally spacedmanner.
 5. The pixel structure as claimed in claim 2, wherein theseparated tabs of the first sub-pixel domain are disconnected from thecorresponding separated tabs of the second sub-pixel domain at locationsabove the data line, the pixel electrode that is located above the dataline comprising strip-like openings formed therein and extending in alengthwise direction of the data line so as to reduce overlapping areabetween the data line and the pixel electrode located above the dataline.
 6. The pixel structure as claimed in claim 1, wherein the pixelstructure further comprises a plurality of pixel common electrodes, thepixel electrode having another two opposite ends each provided with oneof the pixel common electrodes, each of the pixel common electrodeshaving two opposite ends that are spaced from the gate lines by apredetermined distance, imaginary extension lines of the pixel commonelectrodes being perpendicular to the gate lines.
 7. The pixel structureas claimed in claim 6, wherein the gate line is on the same metal layeras a material that makes the pixel common electrodes, the pixel commonelectrodes located at the two opposite ends of the pixel electrode beingboth parallel to the data line and symmetric with respect to an axis ofthe data line, the pixel common electrodes being located beneath thepixel electrode.
 8. The pixel structure as claimed in claim 1, whereinthe pixel structure further comprises a plurality of pixel commonelectrodes, the pixel electrode having another two opposite ends eachprovided with one of the pixel common electrodes, each of the pixelcommon electrodes having two opposite ends that are spaced from the gatelines by a predetermined distance, imaginary extension lines of thepixel common electrodes being perpendicular to the gate lines.
 9. Thepixel structure as claimed in claim 8, wherein a material that makes thepixel common electrodes is not on the same metal layer as the gate line,the pixel common electrodes extending across the gate lines and partlyoverlapping the pixel electrode, the pixel common electrodes located atthe two opposite ends of the pixel electrode being both parallel to thedata line and symmetric with respect to an axis of the data line, thepixel common electrodes being located beneath the pixel electrode. 10.The pixel structure as claimed in claim 5, wherein when the interfacingbetween the first sub-pixel domain and the second sub-pixel domain abovethe data line comprises the slits or is formed with the openingsextending in the lengthwise direction of the data line, the pixelstructure is not color filter on array and color resists are formed on acolor filter side of an upper substrate; or the pixel structure is notcolor filter on array and color resists are formed on a thin-filmtransistor side of a lower substrate.
 11. A liquid crystal display,comprising: a gate driving circuit, which generates a gate signal; adata driving circuit, which generates a grey level signal; and a pixelstructure, which comprises a plurality of pixel electrodes, a pluralityof data lines, and a plurality of gate lines, the gate lines beingelectrically connected to the gate driving circuit to transmit the gatesignal, the data lines being electrically connected to the data drivingcircuit to transmit the grey level signal, the pixel electrode beingoperable to drive a pixel in response to the grey level signal; whereineach of the pixel electrodes has two opposite ends that are eachprovided with one of the gate lines, the data lines and the gate linesbeing perpendicular to each other, each of the pixel electrodescomprising at least two sub-pixel domains, the data lines being locatedbeneath the pixel electrode at interfacing between every two adjacentones of the sub-pixel domains, the pixel electrodes each comprising aplurality of slits located in the interfacing of the two adjacent onesof the sub-pixel domains, the plurality of slits being in alignment withthe data line and located above the data line.
 12. The liquid crystaldisplay as claimed in claim 11, wherein the pixel electrodes eachcomprise a first sub-pixel domain and a second sub-pixel domain, thefirst sub-pixel domain and the second sub-pixel domain being symmetricwith respect to the data line, the first sub-pixel domain and the secondsub-pixel domain being each formed with a plurality of slits, theplurality of slits dividing each of the sub-pixel domains into aplurality of separated tabs, the plurality of slits and the plurality ofseparated tabs being arranged and distributed alternately.
 13. Theliquid crystal display as claimed in claim 12, wherein the slits of thefirst sub-pixel domain and the corresponding slits of the secondsub-pixel domain are jointed to and in communication with each other atlocations above the data line and are symmetric with respect to the dataline, the separated tabs of the first sub-pixel domain being connectedto the corresponding separated tabs of the second sub-pixel domain atlocations above the data line and being symmetric with respect to thedata line, interfacing between the first sub-pixel domain and the secondsub-pixel domain that is above the data line being formed of alternatelyarranged slits that have a predetermined width and are equally spaced.14. The liquid crystal display as claimed in claim 12, wherein theplurality of slits has identical open width and the plurality ofseparated tabs has identical width, the plurality of slits and theplurality of separated tabs being arranged and distributed alternatelyand in an equally spaced manner.
 15. The liquid crystal display asclaimed in claim 12, wherein the separated tabs of the first sub-pixeldomain are disconnected from the corresponding separated tabs of thesecond sub-pixel domain at locations above the data line, the pixelelectrode that is located above the data line comprising strip-likeopenings formed therein and extending in a lengthwise direction of thedata line so as to reduce overlapping area between the data line and thepixel electrode located above the data line.
 16. The liquid crystaldisplay as claimed in claim 11, wherein the pixel structure furthercomprises a plurality of pixel common electrodes, the pixel electrodehaving another two opposite ends each provided with one of the pixelcommon electrodes, each of the pixel common electrodes having twoopposite ends that are spaced from the gate lines by a predetermineddistance, imaginary extension lines of the pixel common electrodes beingperpendicular to the gate lines.
 17. The liquid crystal display asclaimed in claim 16, wherein the gate line is on the same metal layer asa material that makes the pixel common electrodes, the pixel commonelectrodes located at the two opposite ends of the pixel electrode beingboth parallel to the data line and symmetric with respect to an axis ofthe data line, the pixel common electrodes being located beneath thepixel electrode.
 18. The liquid crystal display as claimed in claim 11,wherein the pixel structure further comprises a plurality of pixelcommon electrodes, the pixel electrode having another two opposite endseach provided with one of the pixel common electrodes, each of the pixelcommon electrodes having two opposite ends that are spaced from the gatelines by a predetermined distance, imaginary extension lines of thepixel common electrodes being perpendicular to the gate lines.
 19. Theliquid crystal display as claimed in claim 18, wherein a material thatmakes the pixel common electrodes is not on the same metal layer as thegate line, the pixel common electrodes extending across the gate linesand partly overlapping the pixel electrode, the pixel common electrodeslocated at the two opposite ends of the pixel electrode being bothparallel to the data line and symmetric with respect to an axis of thedata line, the pixel common electrodes being located beneath the pixelelectrode.
 20. The liquid crystal display as claimed in claim 15,wherein when the interfacing between the first sub-pixel domain and thesecond sub-pixel domain above the data line comprises the slits or isformed with the openings extending in the lengthwise direction of thedata line, the pixel structure is not color filter on array and colorresists are formed on a color filter side of an upper substrate; or thepixel structure is not color filter on array and color resists areformed on a thin-film transistor side of a lower substrate.